<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>提交作业</title>
</head>
<body>
  <h1>提交作业</h1>
  <form action="upload.php" method="post" enctype="multipart/form-data">
    <div>
      <label for="fileInput">选择文件：</label>
      <input type="file" id="fileInput" name="homeworkFile">
    </div>
    <button type="submit">提交作业</button>
  </form>
</body>
</html>